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Akademický článek

Two-loop renormalisation of gauge theories in 4D implicit regularisation and connections to dimensional methods

Autor: A. Cherchiglia, D. C. Arias-Perdomo, A. R. Vieira, M. Sampaio, B. Hiller

Publikováno v: European Physical Journal C: Particles and Fields, Vol 81, Iss 5, Pp 1-26 (2021)

Abstract We compute the two-loop $$\beta $$ β -function of scalar and spinorial quantum electrodynamics as well as pure Yang–Mills and quantum chromodynamics using the background field method in a fully quadridimensional setup using implicit regul

Externí odkaz: https://doaj.org/article/c513c41b415d4a77a00a7d3a7d12f386

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Akademický článek

May the four be with you: novel IR-subtraction methods to tackle NNLO calculations

Publikováno v: European Physical Journal C: Particles and Fields, Vol 81, Iss 3, Pp 1-61 (2021)

Abstract In this manuscript, we report the outcome of the topical workshop: paving the way to alternative NNLO strategies ( https://indico.ific.uv.es/e/WorkStop-ThinkStart_3.0 ), by presenting a discussion about different frameworks to perform precis

Externí odkaz: https://doaj.org/article/6ff6d9a6fa4a4e91b5be595c1ef87155

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Akademický článek

Top condensation model: a step towards the correct prediction of the Higgs mass

Autor: A. A. Osipov, B. Hiller, A. H. Blin, F. Palanca, J. Moreira, M. Sampaio

Publikováno v: European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-15 (2020)

Abstract A realization of the composite Higgs scenario in the context of the effective model with the $$SU(2)_L\times U(1)_R$$ S U ( 2 ) L × U ( 1 ) R symmetric four-Fermi interactions proposed by Miransky, Tanabashi and Yamawaki is studied. The mod

Externí odkaz: https://doaj.org/article/44244b4cf3be4765b1f32f8b8f55bbbc

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Akademický článek

A general framework to diagonalize vector–scalar and axial-vector–pseudoscalar transitions in the effective meson Lagrangian

Autor: J. Morais, B. Hiller, A.A. Osipov

Publikováno v: Physics Letters B, Vol 773, Iss , Pp 277-282 (2017)

A new mathematical framework for the diagonalization of the nondiagonal vector–scalar and axial-vector–pseudoscalar mixing in the effective meson Lagrangian is described. This procedure has unexpected connections with the Hadamard product of n×n

Externí odkaz: https://doaj.org/article/280bb3540e0c4eb28b08c153b1e5c7fd

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Akademický článek

To $${d}$$ d , or not to $${d}$$ d : recent developments and comparisons of regularization schemes

Autor: C. Gnendiger, A. Signer, D. Stöckinger, A. Broggio, A. L. Cherchiglia, F. Driencourt-Mangin, A. R. Fazio, B. Hiller, P. Mastrolia, T. Peraro, R. Pittau, G. M. Pruna, G. Rodrigo, M. Sampaio, G. Sborlini, W. J. Torres Bobadilla, F. Tramontano, Y. Ulrich, A. Visconti

Publikováno v: European Physical Journal C: Particles and Fields, Vol 77, Iss 7, Pp 1-39 (2017)

Abstract We give an introduction to several regularization schemes that deal with ultraviolet and infrared singularities appearing in higher-order computations in quantum field theories. Comparing the computation of simple quantities in the various s

Externí odkaz: https://doaj.org/article/3d41d117cadf422db72c66f20f481b17

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Akademický článek

Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (Larix decidua Mill.) and Swiss Stone Pine (Pinus cembra L.) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland)

Autor: B. Hiller, A. Müterthies, F.-L. Holtmeier, G. Broll

Publikováno v: Geographica Helvetica, Vol 57, Iss 2, Pp 81-90

The north-west facing study area in the Upper Engadine (Central Alps, Switzerland) encompasses the whole timberline ecotone between 2200 m and 2400 m a.s.l.. By dendroecological methods, clear differences concerning quantity and age structure of the

Externí odkaz: https://doaj.org/article/9872e62973634b4ab931955eab14b52f

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